Are all of the 3800 SC superchargers the same or are they different. They all seem to be M90s but is there a difference from year to year?? I will be buying one for my 3500 project and would like to start with the best one available.

Gen 5 from the series III 3800 SC is the best, other then that all the series II 3800 SC engines super chargers are pretty much the same other then a vacumm port and the type of coating on the out side of the case. Dan

04-06 grand prix, and grand prix only.

Dark,

Can you be more specific about the pros and cons, and are the earlier ones upgradeable in comparison to 2004-2006 capability with aftermarket parts. A local guy has a lightly used one 80,000 on the OD on a 02 3800SC 100$

Carpart.com also has some 2004-2006 Grand Prix blowers for 350-450$ any advice would be greatly appreciated.

quote Originally posted by Scoobysruvenge: Are all of the 3800 SC superchargers the same or are they different. They all seem to be M90s but is there a difference from year to year?? I will be buying one for my 3500 project and would like to start with the best one available.

The Gen 3 will be plenty for what you are putting it on. They are a dime a dozen these days so they are much easier to come by.

The gen5 blower is just going to give you lower intake temps, more power, and more efficency... Its similar to fully porting a gen3 blower, but it comes without the hassle of having to port a stock one. There are also a few design changes that make it push a bit more air per turn, and efficency designs in the inlet that can not be done by even extensively porting a gen3.

The drive by wire throttle does not mean anything other than that you have to adapt another throttle body on... which is quite easy.

Thanks for the useful information, I will think I will go with the gen 5 if but for the lower temperatures alone, not to mention it’s more efficient for me it’s a no brainer.
I see them for as low as 300$ on carpart.com.

OK so no throttle body needed with the blower, anything external I should get… Oil lines, external accessories or any thing else that might need that is separate from the charger.

What is the clearance of a 3800 SC to the deck lid of the Fiero, also does a NA 90 degree V6 3800 engine sit lower in the engine bay than a 60 degree V6 NA 3400.

What I am looking at is the feasibility of placing a L2A intercooler between the intake and SC, without a supercharger in hand all I can do is speculate on size.

How big is the discharge area of the blower??? A cooler 8 x 10 x 3 should get me in the low 70s percentile of efficiency at 550 CFMs at 80 degrees.

The Thrasher cooler advertises the core at 2 ½ “ thick and looks to be maybe 4 x 8 this might get you in the low 50 percentile range (not very efficient and certainly nor worth 2000+ smackers)



Any help, speculation or criticism is welcome.

Thanks for the useful information, I will think I will go with the gen 5 if but for the lower temperatures alone, not to mention it’s more efficient for me it’s a no brainer.
I see them for as low as 300$ on carpart.com.

--no reason not to go with gen5... the performance of a gen5 on a 3800 is similar to the performance of a gen3 with a small intercooler under it.

OK so no throttle body needed with the blower, anything external I should get… Oil lines, external accessories or any thing else that might need that is separate from the charger.

--Boost bypass valve... should come with the blower.

What is the clearance of a 3800 SC to the deck lid of the Fiero, also does a NA 90 degree V6 3800 engine sit lower in the engine bay than a 60 degree V6 NA 3400.

--The blower and such should be fine, a bump in the decklid would be possible.. nobody has really bolted the blower onto the top of a 60degree

What I am looking at is the feasibility of placing a L2A intercooler between the intake and SC, without a supercharger in hand all I can do is speculate on size.

Look around at zzperformance.com and wbodystore.com for intercooler ideas.... thrasher has been out of busniess for 5 years or so.

How big is the discharge area of the blower??? A cooler 8 x 10 x 3 should get me in the low 70s percentile of efficiency at 550 CFMs at 80 degrees.

--The discharge size is not important in a boosted setup... the outlet size of my turbo is half the size of the blower outlet, and my liquid/air cooler is 5x5x12.

The Thrasher cooler advertises the core at 2 ½ “ thick and looks to be maybe 4 x 8 this might get you in the low 50 percentile range (not very efficient and certainly nor worth 2000+ smackers)

--again, thrasher has been out of busniess for 5 years... so I wouldnt think about that crap anyway. The cores most people use are heater cores from ford probes early 90s, or early 2000s ford escapes. None of them are really that thick.... there are a few custom bar and plate type cores running around, but they do not seem to be any more effective than a tube and fin.
Any help, speculation or criticism is welcome.

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Thanks for the info Dark,

My concern for trying to keep the intercooler the size of the discharge was to prevent having to use a plenum as this will undoubtedly add some inches to the height of the manifold I will need to fabricate.

I read quite a bit and most of what I read says to stay away from transitions that exceed 15 degrees when transitioning from one size to another due to the interruption in air flow at angles greater than 15 degrees.

I know that blown engines exacerbate any defects in flow as the air that is moved is much greater and therefore a greater resistance for any defect, so I will try to play by the rules and design this system as efficient as possible, but if I have to cut a corner here or there I will.

Do you how much room do you have between your SC and the deck lid on your 3800 swap???

If you decide to go with a Gen 3, My buddy in Syracuse NY has a low mile stock one with no play, good rotor coatings, and a S2 TB with new sensors for $250 or $200 for the blower alone. both + shipping

Another option, athough complex, would be to mount the blower upside down, where the discharge would be on top. This would let you run a turndown that would let you locate an intercooler next to the blower, or even run a air/air under the car. I have seen them in the past where the intercooler was mounted on the top, then just turned down into the intake running along the sides of the blower.

Thanks katore8105,

But I think I will use a gen5 and start a little ahead of the game.
After speaking with Eaton I found out Roush uses the same gen 5 internals and makes their own case, I would like to see one side by side and see what Roush did to improve on Eaton design.

Thought this was interesting and thanks for the offer.

I’ve done my homework and will be using an Eaton M112 blower for my project, I am trying to procure a good one for under 400$ shipped to me.

Ibid on this one but got beat down trying to pick it up.





I have selected the M112 03/04 Cobra model for several reasons

The M90 will flow enough air for 350 HP but it will be making some serious heat and will be extremely inefficient after 5 pounds of boost. The next size up is the M112.

The M90 can push 7-8 lbs of boost comfortably, the M12 is good for 12-15 lbs of boost.

Several manufactures put the M112 on their cars, Jaguar and Range Rover to be specific, I like the configuration of their blowers better than the Cobra piece, but they want 800$ and up for one of these if you can find one. The Cobra pieces go for 500$ or less for a low mileage example.

The M112 also has a very basic rectangle shape that will be easy to copy for the custom intake, as well as being an easy to mimic shape it is over twice the size of the M90 making a lot more room for the intercooler, it is roughly 22 x 7”.

The Cobra M112 already has a large after market for intercoolers to fit this space and a lot of people modifying these stock units. There is a lot of support and information available for the Cobra M112 due to the popularity of the Mustang.

I should have a line on obtaining one of these blowers for 400$ or less through Craigslist or one of the Mustang forums.

Wish me some luck.

Thanks for all the help guys, I have purchased a blower and will continue this discussion on my thread fond at

https://www.fiero.nl/forum/F...105944.html#lastpost

Take a look.

If you want to see what a 3800 SC Series III (Gen five blower) and N* TV looks like installed on top of a ZZP intercooler, here is a picture.

Nelson

quote Originally posted by Scoobysruvenge: Thanks for all the help guys, I have purchased a blower and will continue this discussion on my thread fond at https://www.fiero.nl/forum/F...105944.html#lastpost Take a look.

quote Originally posted by Scoobysruvenge: What I found interesting was the Ford T-Bird SC it gets fresh air from the top and discharges out of the back

It works opposite to that. The discharge is just the same as the GM. The intake is also just like the GM. They just changed the shape of the inlet/outlet.